2nd set on co-ordinated board - My best line deepstacked???

[Human A.I.]

The enemy is 38/25/4 over 150 odd hands. He and I have until now kept out of each others way...

My flop decision?? Appreciate your help...

Ultimate Bet No-Limit Hold'em, $.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($37.75)
SB ($52)
Hero ($87.90)
UTG ($110.20)
MP ($19.75)
CO ($41.85)

Preflop: Hero is BB with 4[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $1.75</font>, <font color="#666666">1 fold</font>, CO calls $1.75, <font color="#666666">2 folds</font>, Hero calls $1.25.

Flop: ($5.50) A[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, UTG checks, <font color="#CC3333">CO bets $3.5</font>, <font color="#CC3333">Hero raises to $9</font>, <font color="#CC3333">UTG raises to $14.5</font>, CO folds, Hero ????????

Final Pot: $32.50



Ultimate Bet No-Limit Hold'em, $.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($37.75)
SB ($52)
Hero ($87.90)
UTG ($110.20)
MP ($19.75)
CO ($41.85)

Preflop: Hero is BB with 4[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $1.75</font>, <font color="#666666">1 fold</font>, CO calls $1.75, <font color="#666666">2 folds</font>, Hero calls $1.25.

Flop: ($5.50) A[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, UTG checks, <font color="#CC3333">CO bets $3.5</font>, <font color="#CC3333">Hero raises to $9</font>, <font color="#CC3333">UTG raises to $14.5</font>, CO folds, Hero folds, UTG calls $0.

Final Pot: $32.50